The Rolling Stones have postponed their whole tour of Australia and New Zealand following the death of Sir Mick Jagger's long-term girlfriend.

L'Wren Scott, an American fashion designer and former model, was found dead in her New York apartment on Monday in an apparent suicide.

It is understood that police do not suspect foul play.

Stones frontman Sir Mick said he was "struggling to understand" how the 49-year-old could have ended her own life.

The group had been due to play six shows in Australia, beginning on Wednesday, and one stadium concert in New Zealand in April.

Police outside Scott's apartment block in Chelsea, Manhattan

They said they were "deeply sorry and disappointed" to announce the dates had been pulled and were trying to work out new dates.

A statement said: "Mick Jagger, Keith Richards, Charlie Watts and Ronnie Wood wish to thank all of their fans for their support at this difficult time and hope that they will fully understand the reason for this announcement."